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Intensity vs Photocurrent

1.The number ...

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1.The number of photon of light of wavelength 7000 angstrom equivalent to one joule are

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Q. The number of photons of light of wavelengths

7000 ˚ A

1 J

Q. The wavelength of a photon in Angstrom units having energy of one electron volt is :

Q. There are two sources of light, each emitting with a power of 100 W. One emits X-rays of wavelength 1 nm and the other visible light of 500 nm. The ratio of number of photons of X-rays to the photons of visible light of the given wavelength is:

Q. Which has a higher energy, a photon of violet light with wavelength

4000 ˚ A

or a photon of red light with wavelength

7000 ˚ A

[h = 6.62 \times 10^{- 34} J s]

Q. Calculate the energy, in joules, of a photon of green light having a wavelength of

562 n m

?

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